Guidance needed: Setting up Google Domain with Google Cloud DNS and Lets Encrypt wildcard... possible?

The guide is to use Google Cloud DNS, but i have a combination to use Google Cloud for DNS and to use Google Domains for the registrar

i followed this one , i have the exact same setup
the only problem is that i now have a certificat for acme.abc.com , but i cant use it, since thats a cname for the NS ... so i need somekind of wildcard ...

that link i followed